Home / 712,975.80-1,069,463.70-239,676.60

Finding the Fourth Proportional to 712,975.80, 1,069,463.70 and 239,676.60

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Solution

The fourth proportional to 712,975.80, 1,069,463.70 and 239,676.60 is: 359,514.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,975.80 : 1,069,463.70 = 239,676.60 : x
  2. Step 2: Convert to fraction form
    712,975.80/1,069,463.70 = 239,676.60/x
  3. Step 3: Cross multiply
    712,975.80x = 1,069,463.70 × 239,676.60
  4. Step 4: Simplify right side
    712,975.80x = 256,325,423,439.42
  5. Step 5: Solve for x
    x = 256,325,423,439.42/712,975.80
  6. Step 6: Final answer
    x = 359,514.90

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.